A5013072436- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Antimicrobial agents and applications
- Copper-based nanomaterials and applications
- Perovskite Materials and Applications
- Magnetic Properties and Synthesis of Ferrites
- Genetic Associations and Epidemiology
- Iron oxide chemistry and applications
- Multiferroics and related materials
- Antimicrobial Peptides and Activities
- Polymer Surface Interaction Studies
- ZnO doping and properties
- Bone Tissue Engineering Materials
- Ferroelectric and Piezoelectric Materials
- Epigenetics and DNA Methylation
- Conducting polymers and applications
- Dielectric properties of ceramics
- Nanocluster Synthesis and Applications
- GaN-based semiconductor devices and materials
- Gene expression and cancer classification
- Molecular Biology Techniques and Applications
- Gut microbiota and health
- Advanced Biosensing Techniques and Applications
- Bacterial biofilms and quorum sensing
- Ga2O3 and related materials
Northwestern Polytechnical University
2018-2025
Ministry of Industry and Information Technology
2019-2025
Fujian Normal University
2023-2025
Yunnan Center for Disease Control And Prevention
2023-2024
State Key Laboratory of Polymer Physics and Chemistry
2024
Chinese Academy of Sciences
2024
Institute of Chemistry
2024
University of Chinese Academy of Sciences
2024
Nanjing University of Posts and Telecommunications
2020-2023
Oklahoma State University
2010-2023
We describe here a simple, all-inorganic metal/NC/metal sandwich photovoltaic (PV) cell that produces an exceptionally large short-circuit photocurrent (>21 mA cm−2) by way of Schottky junction at the negative electrode. The PV consists PbSe NC film, deposited via layer-by-layer (LbL) dip coating yields EQE 55−65% in visible and up to 25% infrared region solar spectrum, with spectrally corrected AM1.5G power conversion efficiency 2.1%. This device one largest currents any nanostructured...
By combining nonhydrolytic reaction with seed-mediated growth, high-quality and monodisperse spinel cobalt ferrite, CoFe(2)O(4), nanocrystals can be synthesized a highly controllable shape of nearly spherical or almost perfectly cubic. The the also reversibly interchanged between cubic morphology through controlling nanocrystal growth rate. Furthermore, magnetic studies show that blocking temperature, saturation, remanent magnetization are solely determined by size regardless shape. However,...
Multiple exciton generation (MEG) is a process whereby multiple electron−hole pairs, or excitons, are produced upon absorption of single photon in semiconductor nanocrystals (NCs) and represents promising route to increased solar conversion efficiencies single-junction photovoltaic cells. We report for the first time MEG yields colloidal Si NCs using ultrafast transient spectroscopy. find threshold energy 9.5 nm diameter (effective band gap ≡ Eg = 1.20 eV) be 2.4 ± 0.1Eg an...
We describe the structural, optical, and electrical properties of high-quality films PbSe nanocrystals fabricated by a layer-by-layer (LbL) dip-coating method that utilizes 1,2-ethanedithiol (EDT) as an insolubilizing agent. Comparative characterization nanocrystal made spin-coating LbL process shows EDT quantitatively displaces oleic acid on surface, causing large volume loss electronically couples while severely degrading their positional crystallographic order films. Field-effect...
We describe the structural, optical, and electrical properties of films spin-cast, oleate-capped PbSe nanocrystals that are treated thermally or chemically in solutions hydrazine, methylamine, pyridine to produce electronically coupled nanocrystal solids. Postdeposition heat treatments trigger sintering at approximately 200 degrees C, before a substantial fraction oleate capping group evaporates pyrolyzes. The sintered have large hole density highly conductive. Most amine preserve size...
A combination of hard phase CoFe2O4 and soft MnFe2O4 as the bimagnetic nanocrystals in a core–shell architecture has been synthesized, their magnetic properties have systematically studied. Both HRTEM EDS results confirmed formation structured nanocrystals. On basis systematic comparative studies mechanical mixture pure nanocrystals, chemically mixed Co1–xMnxFe2O4 CoFe2O4@MnFe2O4 MnFe2O4@CoFe2O4 show very unique properties, such blocking temperature coercivity. Our that coercivity correlates...
Initiated chemical vapor deposition (iCVD) is a versatile technique that enables the direct growth of nanostructures and surface modification such structures. Unlike traditional CVD methods, iCVD operates under mild conditions, allowing for damage-free processing delicate substrates. It can produce highly uniform polymer layers, with thicknesses ranging from over 15 μm to sub-10 nm, conformally coating intricate geometries. The broad range compositions achievable offers precise control...
Peroxisome proliferator-activated receptor γ (PPARγ) is a nuclear that plays pivotal role in obesity and diabetes. PPARγ has two isoforms, PPARγ1 PPARγ2. We investigated the functional differences between PPARγ2 by selectively disrupting mice. In contrast to embryonic lethality of PPARγ-deficient mice, PPAR 2 - / mice survived. Although normal development was identified other tissues we examined, exhibited an overall reduction white adipose tissue, less lipid accumulation, decreased...
We study multiple exciton generation (MEG) in electronically coupled films of PbSe quantum dots (QDs) employing ultrafast time-resolved transient absorption spectroscopy. demonstrate that the MEG efficiency does not decrease when QDs are treated with hydrazine, which has been shown to greatly enhance carrier transport QD by decreasing interdot distance. The yield is measured and compared previously reported values for isolated suspended organic solvents at ∼4 4.5 times effective band gap. A...
An injectable hydrogel wound dressing based on an oxidized dextran and ε-poly-<sc>l</sc>-lysine network has multiple biological activities.
Abstract Perovskite memristors hold great promise for neuromorphic computing due to their ease of fabrication and sensitivity light electrical stimuli. However, the common use expensive metal electrodes, such as gold (Au) unstable silver (Ag), limits stability broader application. In this study, a cost‐effective perovskite memristor utilizing novel Ag/Bismuth (Ag/Bi) bilayer electrode, which serves viable alternative Au while maintaining excellent performance, is presented. This design...
The superparamagnetic properties of CoFe2O4 and Fe3O4 nanocrystals have been systematically investigated. observed blocking temperature is at least 100 deg higher than that the same sized nanocrystals. coercivity 5 K over 50 times drastic difference in between similar spherical (or FeFe2O4) spinel ferrite was correlated to coupling strength electron spin orbital angular momentum (L-S) magnetic cations. Compared Fe2+ ion, effect much stronger spin-orbital Co2+ lattice sites leads a anisotropy...
The interparticle distance has been systematically varied by controlling the concentration of 8-nm CoFe2O4 or MnFe2O4 spinel ferrite nanocrystals dispersed in eicosane. For both nanoparticulate systems, blocking temperature decreased with increasing through dilution nanocrystals, which suggests a decrease anisotropy energy barrier EA. for nanoparticles continuously decreasing nanocrystal However, remained constant until ∼15% (wt %) concentration, below sharply. reduced remanence (MR/MS)...
Open wounds (e.g., burns and trauma) are always challenged by various opportunistic bacteria. There is an urgent need for developing novel wound dressing that able to prevent bacterial infection promote the healing simultaneously. Herein, we developed a new type of antimicrobial hydrogels open through imitating facile mussel-inspired catechol/polyamine chemistry. This hydrogel was prepared using catechol (CT) ε-poly-l-lysine (EPL) oxidative cross-linking directly in air at room temperature....
We report initiated chemical vapor deposition of model-graded polymer coatings enabling antibacterial, antifouling, and biocompatible surfaces. The graded coating was constructed by a bottom layer consisting bactericidal poly(dimethyl amino methyl styrene) surface both dimethyl styrene (DMAMS) hydrophilic vinyl pyrrolidone (VP) moieties. Fourier transform infrared spectra showed existence DMAMS VP in the with as major component, while X-ray photoelectron spectroscopy analysis water contact...
Abstract Background With the improvement of bacterial detection, theory sterile female upper reproductive tract has been frequently challenged in recent years. However, thus far, no researchers have used ovaries as study targets. Methods Six women who were diagnosed with ovarian cancer included group, and ten a noncancerous condition (including three patients uterine myoma seven adenomyosis) control group. Immunohistochemistry staining using an antibacterial lipopolysaccharide (LPS) antibody...
Biomaterial-associated infections caused by bacterial contamination and the subsequent formation of biofilms on surfaces are challenges faced our healthcare system. In this work, povidone-iodine-functionalized fluorinated copolymers with stable antibacterial, antibiofilm, antifouling activities were designed prepared a two-step synthesis. First, series poly(hexafluorobutyl methacrylate-co-N-vinyl-2-pyrrolidone), i.e., P(HFBMA-NVP), synthesized radical copolymerization at different feed...